>> So I guess the idea of testing changes yourself before accepting a pull request is out the window... In many cases, the person who merges the pull request i

>> So I guess the idea of testing changes yourself before accepting a pull request is out the window... In many cases, the person who merges the pull request is the person who created the pull request. The author will create a pull request, let his collaborators review the code, then hit merge once he gets a "LGTM". Presumably, the author has already tested his changes.